<template>
  <basic-container>
    <avue-crud :option="option"
               :table-loading="loading"
               :data="data"
               :page="page"
               :permission="permissionList"
               :before-open="beforeOpen"
               v-model="form"
               ref="crud"
               @row-update="rowUpdate"
               @row-save="rowSave"
               @row-del="rowDel"
               @search-change="searchChange"
               @search-reset="searchReset"
               @selection-change="selectionChange"
               @current-change="currentChange"
               @size-change="sizeChange"
               @on-load="onLoad">
      <template slot="teacherIdForm" slot-scope="scope">
        <el-select v-model="scope.row.teacherId" filterable placeholder="请选择">
          <el-option
            v-for="item in teacherList"
            :key="item.value"
            :label="item.label"
            :value="item.value">
          </el-option>
        </el-select>
      </template>
      <template slot="menuLeft">
        <el-button type="primary"
                   size="small"
                   icon="el-icon-plus"
                   plain
                   v-if="permissionList['addBtn']"
                   @click="handleAdd">新 增
        </el-button>
        <el-button type="danger"
                   size="small"
                   icon="el-icon-delete"
                   plain
                   v-if="permissionList['delBtn']"
                   @click="handleDelete">删 除
        </el-button>
      </template>
      <template slot="menu" slot-scope="scope">
        <el-button type="text"
                   size="small"
                   icon="el-icon-user"
                   v-if="permissionList['memberBtn']"
                   @click="handleMember(scope.row, scope.index)">成 员
        </el-button>
      </template>
    </avue-crud>

    <!--  课程成员表  -->
    <el-dialog title="课程成员" :visible.sync="dialogMemberTableVisible">
      <avue-crud :option="memberOption"
                 :table-loading="dialogMemberLoading"
                 :data="memberData"
                 :page="memberPage"
                 :permission="permissionList"
                 ref="crud-dialog"
                 @on-load="onDialogLoad">
<!--        <template slot-scope="scope" slot="menu">-->
<!--          <el-button type="text"-->
<!--                     size="small"-->
<!--                     icon="el-icon-check"-->
<!--                     v-if="permissionList['assignBtn']"-->
<!--                     @click="handleChoose(scope.row, scope.index)">选 择-->
<!--          </el-button>-->
<!--        </template>-->
      </avue-crud>
    </el-dialog>

  </basic-container>
</template>

<script>
  import {getList, getDetail, add, update, remove, getMemberList} from "@/api/basic/course";
  import {getAllUser} from "@/api/system/user"
  import {tableOption} from "@/const/crud/basic/course";
  import {memberOption} from "@/const/crud/basic/student";
  import {mapGetters} from "vuex";
  import {findByValue} from "@/util/util";

  export default {
    data() {
      return {
        form: {},
        query: {},
        loading: true,
        page: {
          pageSize: 10,
          currentPage: 1,
          total: 0
        },
        selectionList: [],
        option: tableOption,
        data: [],
        teacherList: [],
        dialogMemberTableVisible: false,
        memberOption: memberOption,
        dialogMemberLoading: false,
        queryMember: {},
        memberData: [],
        memberPage: {
          pageSize: 10,
          currentPage: 1,
          total: 0
        }
      };
    },
    computed: {
      ...mapGetters(["permission"]),
      permissionList() {
        return {
          addBtn: this.vaildData(this.permission.course_add, false),
          delBtn: this.vaildData(this.permission.course_delete, false),
          editBtn: this.vaildData(this.permission.course_edit, false),
          memberBtn: this.vaildData(this.permission.course_view, false)
        };
      },
      ids() {
        let ids = [];
        this.selectionList.forEach(ele => {
          ids.push(ele.id);
        });
        return ids.join(",");
      }
    },
    created() {
      getAllUser().then(res => {
        const data = res.data.data;
        data.forEach(item => {
          this.teacherList.push({
            label: item.realName,
            value: item.id
          })
        })
      });
    },
    methods: {
      rowSave(row, done, loading) {
        row.teacherRealName = findByValue(this.teacherList, row.teacherId);
        add(row).then(() => {
          done();
          this.onLoad(this.page);
          this.$message({
            type: "success",
            message: "操作成功!"
          });
        }, error => {
          window.console.log(error);
          loading();
        });
      },
      rowUpdate(row, index, done, loading) {
        row.teacherRealName = findByValue(this.teacherList, row.teacherId);
        update(row).then(() => {
          done();
          this.onLoad(this.page);
          this.$message({
            type: "success",
            message: "操作成功!"
          });
        }, error => {
          window.console.log(error);
          loading();
        });
      },
      rowDel(row) {
        this.$confirm("确定将选择数据删除?", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }).then(() => {
          return remove(row.id);
        }).then(() => {
          this.onLoad(this.page);
          this.$message({
            type: "success",
            message: "操作成功!"
          });
        });
      },
      handleAdd() {
        this.$refs.crud.rowAdd();
      },
      handleEdit(row, index) {
        this.$refs.crud.rowEdit(row, index);
      },
      handleDelete() {
        if (this.selectionList.length === 0) {
          this.$message.warning("请选择至少一条数据");
          return;
        }
        this.$confirm("确定将选择数据删除?", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        })
          .then(() => {
            return remove(this.ids);
          })
          .then(() => {
            this.onLoad(this.page);
            this.$message({
              type: "success",
              message: "操作成功!"
            });
            this.$refs.crud.toggleSelection();
          });
      },
      handleMember(row, index) {
        this.queryMember.courseId = row.id;
        this.dialogMemberTableVisible = true;
      },
      beforeOpen(done, type) {
        if (["edit", "view"].includes(type)) {
          getDetail(this.form.id).then(res => {
            this.form = res.data.data;
          });
        }
        done();
      },
      searchReset() {
        this.query = {};
        this.onLoad(this.page);
      },
      searchChange(params, done) {
        this.query = params;
        this.page.currentPage = 1;
        this.onLoad(this.page, params);
        done();
      },
      selectionChange(list) {
        this.selectionList = list;
      },
      selectionClear() {
        this.selectionList = [];
        this.$refs.crud.toggleSelection();
      },
      currentChange(currentPage){
        this.page.currentPage = currentPage;
      },
      sizeChange(pageSize){
        this.page.pageSize = pageSize;
      },
      onLoad(page, params = {}) {
        this.loading = true;
        getList(
          page.currentPage,
          page.pageSize,
          Object.assign(params, this.query)
        ).then(res => {
          const data = res.data.data;
          this.page.total = data.total;
          this.data = data.records;
          this.loading = false;
          this.selectionClear();
        });
      },
      onDialogLoad(page, params = {}) {
        this.dialogMemberLoading = true;
        getMemberList(
          page.currentPage,
          page.pageSize,
          Object.assign(params, this.queryMember)
        ).then(res => {
          const data = res.data.data;
          this.memberPage.total = data.total;
          this.memberData = data.records;
          this.dialogMemberLoading = false;
        })
      }
    }
  };
</script>

<style>
</style>
